Updating a TDirectDrawSurface

[User137]

Hori's DelphiX was not hardware accelerated and therefore 10 times slower. UnDelphiX is different.

I originally tried to load each bitmap into the same slot in a DXImageList but that lead to many memory leaks and errors.

DXImageList should work aswell. You must have some error in the code or that is another bug..?

edit: Oh, you can try freeing the Surface before drawing the picture in. It's a little weird solution though. Also what you are doing is using TBitmap whereas all graphics with DelphiX should properly be TDirectDrawSurfaces mainly from DXImageList. You can draw a list item on a surface without canvas.